721882682 has 16 divisors (see below), whose sum is σ = 1107603072. Its totient is φ = 352705920.

The previous prime is 721882661. The next prime is 721882687. The reversal of 721882682 is 286288127.

It is a super-2 number, since 2×721882682² = 1042229213143026248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (721882687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57557 + ... + 68967.

It is an arithmetic number, because the mean of its divisors is an integer number (69225192).

Almost surely, 2^721882682 is an apocalyptic number.

721882682 is a deficient number, since it is larger than the sum of its proper divisors (385720390).

721882682 is a wasteful number, since it uses less digits than its factorization.

721882682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133.

The product of its digits is 172032, while the sum is 44.

The square root of 721882682 is about 26867.8745344696. The cubic root of 721882682 is about 897.0614786515.

The spelling of 721882682 in words is "seven hundred twenty-one million, eight hundred eighty-two thousand, six hundred eighty-two".